Fixing device for extension card of computer

Abstract

The present invention provides a device for fixing an extension card to a computer case. The device replaces the conventional screw-fastening manner, and is especially suitable for fixing the extension card located in a limited space where screw fastening is not available. The device includes a fixing element having one end pivotally mounted on the computer case and the other end formed with a resilient plate for fixing the extension card. A pressing portion and a latch are formed on the fixing element so as to latch the fixing element when the fixing element is being rotated to a fastening position. When the extension card is to be removed, the user can depress the pressing portion to move the latch away from the computer case, then rotate the fixing element to a release position.

What is claimed is:  
     
       1. A device for fixing an extension card of a computer to a computer case comprising: 
       a fixing element having one end pivotally mounted on the case and adjacent to a mounting plate of the extension card; and  
       a resilient plate, formed on the fixing element, to be rotatably movable between a fastening position to press and fix a folded-up surface of the mounting plate, and a release position to release the pressing when the resilient plate is moved away from the folded-up surface, the computer case being formed with a rectangular hole for receiving the fixing element, and a supporting surface being folded outwards from a rim of the hole for supporting the folded-up surface of the mounting plate.  
     
     
       2. The device for fixing an extension card of computer as recited in claim  1  wherein the fixing element comprises a pivotal portion formed with a pair of semi-spherical extrusions to be fitted into corresponding pivotal holes formed on the computer case. 
     
     
       3. The device for fixing an extension card of computer as recited in claim  1  wherein the fixing element comprises a pivotal portion having a shaft passing through the computer case and the fixing element to pivot the fixing element on the computer case. 
     
     
       4. The device for fixing an extension card of computer as recited in claim  1  wherein the fixing element is formed with a pressing portion and a latch for latching the fixing element by the latch fixed at a border of the computer case by resilient force of the pressing portion when the fixing element is being rotated to the fastening position; and releasing the fixing element when the pressing portion is depressed by user to move the latch away from the border of the computer case and aloud the fixing element to be rotated to the release position. 
     
     
       5. The device for fixing an extension card of computer as recited in claim  1  wherein the fixing element is formed with a plurality of spring tips for contacting the fixing element to the computer case when the fixing element is at the fastening position where the fixing element and the computer case are electrically connected to achieve a function of preventing electromagnetic emission interference to and from any adjacent electronic components. 
     
     
       6. The device for fixing an extension card of computer as recited in claim  4  wherein the pressing portion of the fixing element is formed first by being bent outwards then being bent at the tips inwards so as to get a suitable pressing force and to be easily moved into position. 
     
     
       7. The device for fixing an extension card of computer as recited in claim  1  wherein the supporting surface is formed with an extrusion for positioning the folded-up surface of the mounting plate by a hole which is conventionally fastened by a screw to the computer case. 
     
     
       8. The device for fixing an extension card of computer as recited in claim  1  wherein the resilient plate is formed first by being bent outwards then being bent at the tips inwards so as to get a suitable pressing force to the folded-up surface of the mounting plate and to be easily moved into position. 
     
     
       9. The device for fixing an extension card of computer as recited in claim  1  is made of metal.